Here is the full list of all 42 Oil Enterprise achievements.
Maintenance of 100% or more
Aquired licence for Northern America
Aquired licence for Gulfregion
Aquired licence for Central America
Aquired licence for South America
Aquired licence for Northern Europe
Aquired licence for Eastern Europe
Aquired licence for Northern Africa
Aquired licence for Westafrica
Aquired licence for the Ural
Aquired licence for Central Asia
Aquired licence for Middle East
Aquired licence for Siberia
Aquired licence for Southeast Asia
Aquired licence for Polynesia
Aquired licence for Australia
Geology lab and geology office constructed in a game
Education center and safety control center constructed in a game
Research building and university branch constructed in a game
Substance research constructed
Lobby building constructed
Cooperation office constructed
Architect and construction offices constructed in a game
Accounting office and tender management constructed in a game
10.000 Brl oil extracted
Laboratory and engineers office constructed in a game
100k Brl oil extracted
500k Brl oil extracted
1M Brl oil extracted
10M Brl oil extracted
50M Brl oil extracted
Safety of 95% or more
Had an accident
Had a deadly accident
Let a building fail due to decay
Fulfilled a contract
1000 Brl in contracts fulfilled
Had a maintenance breakdown
10k Brl in contracts fulfilled
100k Brl in contracts fulfilled
1M Brl in contracts fulfilled